Manual -

Manual

Kairuhs AHI Quad Display Kit Manual

Version: Hardware v2.0 · Firmware v2.12

1. Introduction

The Kairuhs AHI Quad Display Kit is a next-generation modular telemetry and HUD system for RC aircraft. Supporting up to four simultaneous screens, the system delivers immersive cockpit-style telemetry with customizable layouts, radar simulation, and dynamic HUD rendering. Each display can be independently assigned a role and orientation, offering flexibility for nearly any airframe or mission profile.

Firmware v2.12 builds on the robust base of v1.0+ with additional system stability, refined visual layouts, and expanded customization options. Radar simulation logic, display roles, and WiFi-based configuration have all been added and improved. This manual includes details for setup, display assignment, LoRadar usage, sim settings, and user adjustments.

2. Kit Overview (Hardware v2.0)

5V Display Drive: High brightness optimized for outdoor use
Quad Display Output: Assign any of 4 ports to any screen role
Horizontal Connectors: Compact installation with side-exit headers
Slim Profile Modules: Screen headers pre-removed for tighter cockpit builds
Dedicated LoRa Port: Used for LoRadar real-time target tracking and telemetry
Labeled Solder Pads: Easy 4-wire hookup to flight controller UART
Legacy Button Menus Removed: Entire setup now done through WiFi config

3. Power & Flight Controller Integration

Power Source: Supply 5V to FC-IN port, USB-C port or solder to 5V FC-IN pad
Wiring:
- Green → FC RX
- Yellow → FC TX
- Red → +5V
- Black → GND
Baud Rate: 115200
Protocol: MAVLink baud rate 115200
This kit plugs directly into the SpeedyBee F405 Wing and F405 Wing Mini via the 6-pin JST UART port (TX/RX/5V/GND). No additional wiring or adapters are required.
Tip: Confirm correct UART & baud rate in your INAV configurator Ports tab

4. Display + LORA Installation

Insert 8-pin cables fully until seated (do not force)
Match cable orientation: Red = 5V, Black = GND
Do not connect the LoRa module to any screen port — this will damage the module
Avoid combining 1.14″ and 1.44″ displays in the same setup, as this will lead to inconsistent and unintended layouts
Secure displays with small dabs of glue if they separate from the board

5. Startup Behavior

Boot Splash: Displays firmware version + link status indicators
MAVLink Active: Green boxes = good link
LoRa Active: Green boxes = good link

6. Assignable Display Roles

Each connected display can be assigned independently in the config menu. Screens can also be duplicated to mirror the same role on multiple displays if desired. Individual screen rotation can also be set per display, allowing fully custom orientations and mounting.

6.1 Primary Flight Display (PFD)

Speed Tape with trend vector (3s)
Speed tape
Roll and Pitch Horizon
Altitude Tape
Compass + Heading
Return-to-Home Arrow
Distance to Home, Variometer
Selectable Compact or Full Compass layout
Satellite count. Icon turns green when ≥ 7 satellites are locked

6.2 Multifunction Display (MFD)

Throttle position
Flight Mode Display (MAN / ACR / HOR)
Voltage or Fuel-style gauge
Amp Draw, Wattage
RSSI, Battery Remaining (if on 1.14″)
Battery Voltage, Cell Voltage, Cell Count
Flap + Gear Indicators
Roll, Pitch & Yaw Attitude Indicators

6.3 HUD Display

Speed, Altitude, Pitch, Roll, Heading
HUD vertical offset adjustable in config (if on 1.14″)
Can be inverted for reflective HUD glass alignment

6.4 Radar Display (LoRadar)

Live tracking of real or simulated targets
Circular radar layout with customizable range
Labels: ID (Vehicle or Pilot), Altitude, Distance
Target dots color-coded: Cyan = Friendly, Red = Hostile
Adjustable radar sim logic and visibility filters
Top Legend: Shows LoRa status (Active/Inactive), satellite count, and current radar range
Bottom Legend: Displays your personal Vehicle ID, Pilot ID, and LoRa node presence
Satellite Count Color:
- Orange = fewer than 7 (weak lock)
- White = 8 to 18
- Cyan = 19+ (strong lock)
The more satellites, the more accurate your positioning on other pilots’ radars
No GPS Lock: Your position, altitude, distance, and ID will not be shown to others

7. Configuration (WiFi Access Point Mode)

7.1 Enter AP Mode

Power on or reset the device and immediately hold BOOT
AP instructions will appear on screen
Connect to the WiFi network shown (default: KAIRUHS_Config, password: kairuhs123)
Open a browser and go to http://192.168.4.1

7.2 User Settings Available

The KAIRUHS WiFi Configuration interface allows full customization of system behavior, layout, warnings, radar simulation, and RC mapping—all editable from your browser. No code or CLI required.

⚠️ Warnings

There are 6 warning types, each with individual enable/disable toggles and adjustable thresholds:

Stall Warning
Overspeed Warning
Overcurrent Warning
Low Altitude Warning
Altitude Ceiling Warning
Low Voltage Warning

Behavior:
When triggered, the warning appears as a bold red box centered on-screen with the type labeled in bold red uppercase (e.g., VOLTAGE, STALL, ALTITUDE).

Per-Screen Behavior:

You can choose which of the 4 displays show the warning overlay
HUD and Radar displays support color-flash mode (green-to-red flash)

📏 Units

Speed Units: MPH / KPH / Knots
Altitude + Distance Units: Feet / Meters / Yards

🎛 Display Customization

Brightness: Adjustable from 1 (dim) to 10 (max)
Compass Layout (PFD): Full or Compact
Fuel Gauge Mode (MFD): Choose between Voltage or Fuel Bar layout
Display Type: Select between 1.14″ or 1.44″ (more options coming soon)

🖥️ Display Assignments (Per Screen)

Display Role (Screens 1–4): Assign each display to any role: PFD, MFD, HUD, or Radar
Duplication: You can mirror a role across multiple screens (e.g., 4 PFDs)
Rotation: Set screen rotation individually: 0°, 90°, 180°, 270° + optional inversion
HUD Vertical Offset (1.14″ only): Slide HUD elements up or down for reflective alignment

📡 LoRadar & Simulation Settings

Personal Info

Pilot ID & Vehicle ID: Displayed on your radar label. These IDs also appear on other LoRadar-equipped systems within range, allowing for real-time identification and team awareness.
Team Select: 1 = Cyan (Friendly), 2 = Red (Hostile) — useful for formation flying or team-based combat

Radar Display

Radar Range: Set radar distance
Show Targets Mode: None, Friendly, Hostile, All
Max Target Range: Distance limit before targets are removed
Show Target Labels: Toggle display of info next to targets:
- ID Label: Show/hide pilot or vehicle name
- Distance Label: Show/hide distance
- Altitude Label: Show/hide altitude
Label Source: Choose whether to show Pilot ID or Vehicle ID

🎯 Sim Target Behavior (LoRadar AI)

Basic Simulation

Sims Enabled: On/Off toggle for simulation
Spawn Chance %: Probability of new sim spawn per frame
Max Sims: Upper limit of active sims
Show Sims Mode: All, Friendly, Hostile, None

Pursuit Behavior

Pursuers Enabled: Toggle for chase-style behavior
Friendly Pursuers %: % of friendlies that can pursue
Pursuer Chance %: Chance new sim will be a pursuer
Radar Eject Factor: How far a sim must drift before it “ejects”
Pursuit Aggressiveness: 1–10 master difficulty control

Flight Parameters

Follow Distance: Trailing distance for chasers
Min/Max Chase Speed: Speed range for pursuers
Vertical Gain Rate: Climb/descent speed in ft/s
Turn Agility: How sharp sims turn (°/s)
Loop Agility: Size and duration of vertical loops

🎮 RC Channel Mapping

Assign your RC inputs to the proper display indicators:

Throttle
Flight Mode
Flaps
Gear

Each channel:

Can be mapped to channels 1–8
Includes an Invert toggle if the direction is reversed

✅ Save & Apply Settings

At the bottom of the web interface, tap “Save Settings” to write all changes. The device will automatically reboot into normal mode with the new configuration applied.

8. LoRadar Summary

LoRadar is a real-time radar engine that displays nearby aircraft and simulated (“sim”) targets on a circular interface. It’s designed for fast-paced FPV combat scenarios—not realism. Every contact is abstracted for maximum clarity: no scan lag, clutter, or signal loss.

Sim or fly in the real skies. Friendly or foe. Manual or mesh. LoRadar turns your radar into a dynamic battlespace, with full sim logic, team ID, GPS sync, and class-aware performance—all wrapped in a sleek HUD. And it’s all editable in your browser.

LoRadar currently works but is still in its early stages and undergoing active refinement.

Radar Display Features

Circular Layout: Heading-based radar with adjustable range.
Target Labels: Each contact shows ID, altitude, and distance.
Color Coding:
- Cyan: Friendly (e.g., wingmen)
- Red: Hostile (e.g., bogeys)
Top Legend:
- LoRa Status: Active or Inactive
- Satellite Count: Determines GPS accuracy and visibility
  - Orange = <7 sats (low)
  - White = 8–18 sats (moderate)
  - Cyan = 19+ sats (high)
Bottom Legend:
- Vehicle ID and Pilot ID
- LoRa Node Status (indicates if your ID is registered in the mesh)

Your location, altitude, and label will not appear to others unless a valid GPS lock is established. LoRadar can theoretically support up to 16 remote pilots via LoRa mesh. This capacity is currently untested.

Sim Target Logic

LoRadar supports fully simulated targets with adjustable behavior:

Spawn Control:
- Enable/disable all sims
- Cap total sim count
- Adjust spawn probability and frequency
Class Types:
- Jetliners: Fast, steady, high altitude (50% spawn chance)
- Warbirds: Aggressive and maneuverable (20%)
- Props: Slow, low-level (30%)
Flight Behavior:
- Randomized heading and climb rate
- Pursuer mode (sims chase your real position)
- Realistic turn and speed dynamics based on class
- Auto loop-back maneuvers if overshot
Friend vs. Foe Filtering:
- Show All / Friendlies Only / Hostiles Only / None

Web Configuration (via KAIRUHS Config)

All simulation behavior can be tuned live in the browser:

Edit radar behavior

Enable simulation

Set spawn rate, max count, visibility filters

Choose pursuit logic and friend/foe mix

9. Troubleshooting

No MAVLink: Confirm RX/TX are not reversed. Check UART baud.
Radar Targets Missing: Ensure LoRa module is connected. Check GPS lock + Sim settings.
Display Blank: Check display size config.
WiFi Config Won’t Load: Try different device/browser; reboot display.

10. Technical Specifications

Component	Weight (g)	Dimensions (mm)
AHI Controller Board	14.7	28.9 × 53.3 × 13.2
1.44″ Display (each)	19.9	29.4 × 45.9 × 12.2
1.14″ Display (each)	19.2	28.0 × 40.0 × 11.5
LoRa Module (optional)	8.0	17.0 × 28.0 × 6.0
Cables + Misc.	5	—

11. Support & Community

Email: kairuhsconsole@gmail.com
Thingiverse: KairuhsHQ
FaceBook: https://www.facebook.com/groups/1231576258453632/
Feedback: We rely on your builds and test flights to improve the platform. Please send us your builds, flight footage, and photos—they may be featured on our website or socials.

Thanks for flying KAIRUHS. Fly low. Fly fast. Fly smart.